Emerson Digistart IS1x0043B series - Application Examples and Technical Data; Installation Examples

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74 Digistart IS User Guide
www.controltechniques.com Issue: 4
10. Application Examples
A selection of Application Notes are available describing advanced installation or configuration of the Digistart IS for situations with
specific performance requirements. Application notes are available for situations including brake and jog operation, pumping and
advanced protection options.
10.1 Installation with main contactor
The Digistart IS is installed with a main contactor (AC3 rated). Control voltage must be supplied from the input side of the contactor.
The main contactor is controlled by the Digistart IS Main Contactor output, which by default is assigned to Output Relay A (terminals
COM1, RLO1).
Figure 10-1 Installation with main contactor
RLC3
COM3
COM1
RLO1
+24V
0V
RLO2
COM2
RLO3
AO1
0V
COM4
RLC4
RLO4
TH2
TH1
DI2
+24V
DI3
+24V
DI4
+24V
+24V
+24V
DI5
PT4
PT5
PT3
CSR
CSL
CSH
DI1
E
110-210 VAC
+10%
-15%
220-440 VAC
+10%
-15%
6/T3
2/T1
4/T2
5/L3
3/L2
1/L1
E
1
Control voltage
2
Remote control inputs
3
Motor thermistor input
4
RTD/PT100 input
5
24 Vdc output
6
Relay outputs
7
Analog output
8
Three-phase supply
9
Motor terminals
KM1
Main contactor
F1
Semiconductor fuses (optional)
S1
Start/stop contact
S2
Reset contact
COM1, RLO1
Relay output A
COM2, RLO2
Run relay output
COM3, RLC3, RLO3
Relay output B
COM4, RLC4, RLO4
Relay output C
Parameter settings:
 Pr 4A Relay A Action
 Select 'Main Contactor' - assigns the Main Contactor function to Relay Output A (default setting)